1 files changed, 181 insertions, 0 deletions
diff --git a/src/hotstuff_client.cpp b/src/hotstuff_client.cpp
new file mode 100644
index 0000000..5c04e5f
--- /dev/null
+++ b/src/hotstuff_client.cpp
@@ -0,0 +1,181 @@
+#include <cassert>
+#include "salticidae/type.h"
+#include "salticidae/netaddr.h"
+#include "salticidae/network.h"
+#include "salticidae/util.h"
+#include "util.h"
+#include "type.h"
+#include "client.h"
+
+using salticidae::NetAddr;
+using salticidae::Config;
+using salticidae::ElapsedTime;
+using salticidae::EventContext;
+using salticidae::Event;
+using salticidae::bytearray_t;
+using salticidae::trim_all;
+using salticidae::split;
+
+using hotstuff::uint256_t;
+using hotstuff::MsgClient;
+using hotstuff::CommandDummy;
+using hotstuff::Finality;
+
+size_t max_async_num = 10;
+int max_iter_num = 100;
+
+struct Request {
+    ElapsedTime et;
+    Request() { et.start(); }
+};
+
+std::unordered_map<int, salticidae::RingBuffer> buffers;
+std::unordered_map<const uint256_t, Request> waiting;
+
+int connect(const NetAddr &node) {
+    int fd;
+    if ((fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1)
+        assert(0);
+    struct sockaddr_in sockin;
+    memset(&sockin, 0, sizeof(struct sockaddr_in));
+    sockin.sin_family = AF_INET;
+    sockin.sin_addr.s_addr = node.ip;
+    sockin.sin_port = node.port;
+    if (connect(fd, (struct sockaddr *)&sockin, sizeof(struct sockaddr_in)) == -1)
+        assert(0);
+    HOTSTUFF_LOG_INFO("connected to %s", std::string(node).c_str());
+    return fd;
+}
+
+void write_msg(int fd, const MsgClient &msg) {
+    bytearray_t msg_data = msg.serialize();
+    if (write(fd, msg_data.data(), msg_data.size()) != (ssize_t)msg_data.size())
+        assert(0);
+}
+
+void read_msg(int fd, MsgClient &msg) {
+    static const size_t BUFF_SEG_SIZE = 1024;
+    ssize_t ret;
+    auto &buffer = buffers[fd];
+    bool read_body = false;
+    for (;;)
+    {
+        bytearray_t buff_seg;
+        if (!read_body && buffer.size() >= MsgClient::header_size)
+        {
+            buff_seg = buffer.pop(MsgClient::header_size);
+            msg = MsgClient(buff_seg.data());
+            read_body = true;
+        }
+        if (read_body && buffer.size() >= msg.get_length())
+        {
+            buff_seg = buffer.pop(msg.get_length());
+            msg.set_payload(std::move(buff_seg));
+            return;
+        }
+
+        buff_seg.resize(BUFF_SEG_SIZE);
+        ret = read(fd, buff_seg.data(), BUFF_SEG_SIZE);
+        assert(ret != -1);
+        if (ret > 0)
+        {
+            buff_seg.resize(ret);
+            buffer.push(std::move(buff_seg));
+        }
+    }
+}
+
+void try_send(int fd) {
+    while (waiting.size() < max_async_num && max_iter_num)
+    {
+        auto cmd = CommandDummy::make_cmd();
+        MsgClient msg;
+        msg.gen_reqcmd(*cmd);
+        write_msg(fd, msg);
+        HOTSTUFF_LOG_INFO("send new cmd %.10s",
+                            get_hex(cmd->get_hash()).c_str());
+        waiting.insert(std::make_pair(
+            cmd->get_hash(), Request()));
+        if (max_iter_num > 0)
+            max_iter_num--;
+    }
+}
+
+void on_receive(int fd) {
+    MsgClient msg;
+    uint256_t cmd_hash;
+    Finality fin;
+    read_msg(fd, msg);
+    HOTSTUFF_LOG_DEBUG("got %s", std::string(msg).c_str());
+    if (!msg.verify_checksum())
+        HOTSTUFF_LOG_ERROR("incorrect checksum %08x", msg.get_checksum());
+    msg.parse_respcmd(cmd_hash, fin);
+    HOTSTUFF_LOG_INFO(
+        "fd %d got response for %.10s: <decision=%d, blk=%.10s>",
+        fd, get_hex(cmd_hash).c_str(),
+        fin.decision,
+        get_hex(fin.blk_hash).c_str());
+    auto it = waiting.find(cmd_hash);
+    if (it == waiting.end()) return;
+    waiting.erase(it);
+    try_send(fd);
+}
+
+std::pair<std::string, std::string> split_ip_port_cport(const std::string &s) {
+    auto ret = trim_all(split(s, ";"));
+    return std::make_pair(ret[0], ret[1]);
+}
+
+Event *on_receive_ev;
+
+int main(int argc, char **argv) {
+    Config config("hotstuff.conf");
+    std::vector<NetAddr> peers2;
+    EventContext eb;
+    auto opt_idx = Config::OptValInt::create(-1);
+    auto opt_server_addr = Config::OptValStr::create("127.0.0.1:2234");
+    auto opt_replicas = Config::OptValStrVec::create();
+    auto opt_max_iter_num = Config::OptValInt::create();
+
+    try {
+        config.add_opt("idx", opt_idx, Config::SET_VAL);
+        config.add_opt("server", opt_server_addr, Config::SET_VAL);
+        config.add_opt("replica", opt_replicas, Config::APPEND);
+        config.add_opt("ntx", opt_max_iter_num, Config::SET_VAL);
+        config.parse(argc, argv);
+        auto idx = opt_idx->get();
+        max_iter_num = opt_max_iter_num->get();
+        std::vector<std::pair<std::string, std::string>> replicas;
+        for (const auto &s: opt_replicas->get())
+        {
+            auto res = trim_all(split(s, ","));
+            assert(res.size() == 2);
+            replicas.push_back(std::make_pair(res[0], res[1]));
+        }
+
+        NetAddr server(opt_server_addr->get());
+        if (-1 < idx && (size_t)idx < replicas.size() &&
+            replicas.size() > 0)
+        {
+            for (const auto &p: replicas)
+            {
+                auto _p = split_ip_port_cport(p.first);
+                size_t _;
+                peers2.push_back(NetAddr(NetAddr(_p.first).ip, htons(stoi(_p.second, &_))));
+            }
+            server = peers2[idx];
+        }
+
+        int fd = connect(server);
+        on_receive_ev = new Event{eb, fd, EV_READ, [](int fd, short) {
+            on_receive(fd);
+            on_receive_ev->add();
+        }};
+        on_receive_ev->add();
+        try_send(fd);
+        eb.dispatch();
+    } catch (hotstuff::HotStuffError &e) {
+        HOTSTUFF_LOG_ERROR("exception: %s", std::string(e).c_str());
+    }
+    return 0;
+}